# pip install lxml -i
from lxml import etree

body = """
<book>
		<div>
			 <select id="province" onchange="updateCities()">
			    <option value="">请选择省份</option>
			    <option value="">请选择城市</option>
			</select>
			<select id="province" onchange="updateCities()">
			    <option value="">请选择区</option>
			    <option value="">请选择县</option>
			</select>
		</div>
</book>
"""

tree = etree.XML(body)
# result = tree.xpath("/book/div/select/option/text()")
# result = tree.xpath("/book/div/*/option/text()")
result = tree.xpath("/book//option/text()")
print(result)